We consider option pricing when dynamic portfolios are discretely rebalanced. The portfolio adjustments only occur after fixed relative variation of the stock price. The stock price follows a marked point process and the market is incomplete. We first characterize the equivalent martingale...

We consider a pure exchange economy under uncertainty in which the traders have the non-partition structure of information. They willing to trade the amounts of state-contingent commodities and they know their own expectations. Common knowledge of these conditions among all the traders can...

In December 2016 the National Bank of Hungary (NBH), by referring to its "backcasts" (based on analyses of past data-revisions), arbitrarily revised upwards the data of the Hungarian Statistical Office (HSO) on GDP-growth for the first three quarters of 2016. This "methodological innovation" (as...

In December 2016 the National Bank of Hungary (NBH), by referring to its "backcasts" (based on analyses of past data-revisions), arbitrarily revised upwards the data of the Hungarian Statistical Office (HSO) on GDP-growth for the first three quarters of 2016. This "methodological innovation" (as...

The study presents a comprehensive overview of labour market forecasting activities, mostly quantitative, based on multi-sector models, in 12 countries and the European Union. The principal aim of this effort is to provide ideas, lessons and benchmarks for similar forecasting exercises in...

Our paper examines the possible role of enterprise surveys in the forecasting of labour market processes. Based on two enterprise surveys with large samples we examine to what extent are enterprises, differing in their size, sales revenues, ownership structure and markets, capable to predict...

The study was prepared in the framework of the "Priority Project TÁMOP - 2.3.2-09/1: Establishing labour market forecasts and foreseeing structural changes". It presents a comprehensive overview of labour market forecasting activities, mostly quantitative, based on multi-sector models, in 12...

The chosen tournament format has a fundamental impact on the popularity and success of a sport. Efficiency of a format describes how well it can reproduce the real but hidden power ranking of the participants. We compare the efficiency of the formats of two individual sports that share similar...